TTL with Multiple Flashes?

Originally posted on AdoramaTV on September 11, 2023.
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“When using multiple flashes in the same optical group, does E-TTL fire them all at the same power? What if some of those flashes are larger or more powerful while others are smaller like the Canon 600EX and the 430EX? The camera has no clue which way the flashes are pointed, so how does it know what to do?”

Amer D.

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